When did you split into two batches? Did you split the grain into two mashes or the wort into two kettles?

I assume the first, since the second would have to have the same OG. The first would have two different OGs because you're two systems have two different efficiencies. Things like dead volume, sparge volume, mash thickness, mash time and mash temperatures can all affect the efficiency from an otherwise identical bag of crushed grain. That is assuming you split grain from the same crush, otherwise, crush tends to be the overwhelming variable.

When did you split into two batches? Did you split the grain into two mashes or the wort into two kettles?

I assume the first, since the second would have to have the same OG. The first would have two different OGs because you're two systems have two different efficiencies. Things like dead volume, sparge volume, mash thickness, mash time and mash temperatures can all affect the efficiency from an otherwise identical bag of crushed grain. That is assuming you split grain from the same crush, otherwise, crush tends to be the overwhelming variable.

It was all together. Same mash, same crush, same boil. The place it was separated was into 2 carboys for fermentation. It was a 10 gallon batch. Full boil.

When did you split into two batches? Did you split the grain into two mashes or the wort into two kettles?

I assume the first, since the second would have to have the same OG. The first would have two different OGs because you're two systems have two different efficiencies. Things like dead volume, sparge volume, mash thickness, mash time and mash temperatures can all affect the efficiency from an otherwise identical bag of crushed grain. That is assuming you split grain from the same crush, otherwise, crush tends to be the overwhelming variable.

It was all together. Same mash, same crush, same boil. The place it was separated was into 2 carboys for fermentation. It was a 10 gallon batch. Full boil.

When did you split into two batches? Did you split the grain into two mashes or the wort into two kettles?

I assume the first, since the second would have to have the same OG. The first would have two different OGs because you're two systems have two different efficiencies. Things like dead volume, sparge volume, mash thickness, mash time and mash temperatures can all affect the efficiency from an otherwise identical bag of crushed grain. That is assuming you split grain from the same crush, otherwise, crush tends to be the overwhelming variable.

It was all together. Same mash, same crush, same boil. The place it was separated was into 2 carboys for fermentation. It was a 10 gallon batch. Full boil.

Something's gotta be wrong because that's nearly impossible.

That's what I'm thinking. Is it possible that the higher gravity portion would sink to the bottom? That's where his came from and mine came from the top. You wouldn't think so though after a 90-minute boil.

That's what I'm thinking. Is it possible that the higher gravity portion would sink to the bottom? That's where his came from and mine came from the top. You wouldn't think so though after a 90-minute boil.

That's what I'm thinking. Is it possible that the higher gravity portion would sink to the bottom? That's where his came from and mine came from the top. You wouldn't think so though after a 90-minute boil.

Only if you added water post chill and didn't stir adequately. Otherwise, sugar solutions (wort) will never separate once mixed. Put both hydrometers in the same wort and see if they read the same. Maybe one had some bubbles on it?

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Delmarva United Homebrewers - President by inverse coup - former president ousted himself.AHA Member since 2006BJCP Certified: B0958

That's what I'm thinking. Is it possible that the higher gravity portion would sink to the bottom? That's where his came from and mine came from the top. You wouldn't think so though after a 90-minute boil.

Only if you added water post chill and didn't stir adequately. Otherwise, sugar solutions (wort) will never separate once mixed. Put both hydrometers in the same wort and see if they read the same. Maybe one had some bubbles on it?

I'll try this. We were not together when we took the readings. Perhaps one of us had too many Hop Slams? I have photo documentation though.

Is it possible that the higher gravity portion would sink to the bottom? That's where his came from and mine came from the top. You wouldn't think so though after a 90-minute boil.

It is surprisingly difficult to mix the two runnings evenly prior to the boil. That's why I take my "pre-boil" gravity reading right after the wort starts boiling. It is quite possible that your wort wasn't completely mixed when you split it in two.